WhatsApp Chatbots in Singapore: Business App, API or Custom

WhatsApp chatbot options at a glance

The choice is less about the bot and more about the account underneath it. The WhatsApp Business app is a phone app. The WhatsApp Business Platform, also called the Cloud API, is a service your software talks to. Everything a real chatbot does sits on the second one.

A useful rule: if a person still reads and answers every chat, the app is enough. If you want messages to go out without anyone touching the phone, you need the API.

Option 1: WhatsApp Business app automations

The free app has three tools under Business tools: a greeting message sent to new or long-quiet contacts, an away message sent outside the hours you set, and quick replies, which are saved answers a person sends with a shortcut such as /hours. They take ten minutes to set up and cost nothing.

What they cannot do is listen. An away message sends the same text whether the customer asked about prices or wants to cancel. There is no branching menu, no lookup of an order and no hand-off between staff.

Meta's own AI agent in the app

Meta now offers its Meta Business Agent inside the WhatsApp Business app through the paid Meta One subscription. Meta says the agent replies around the clock, books appointments and captures leads, but also that plans and availability vary by region, app and account. Meta's June 2026 announcement said it was starting with a select number of businesses. Check the Tools tab in your own app to see whether it is offered to you before planning around it. Our guide to Meta AI in WhatsApp for businesses covers what it shares and the PDPA points.

Option 2: WhatsApp Cloud API through a provider

Most Singapore SMEs that want a proper bot use a Business Solution Provider: a company such as WATI, respond.io or Interakt that is approved by Meta, connects your number to the Cloud API and gives you a dashboard. You build menus or connect an AI model in their tool, and your team answers in a shared inbox. Our comparison of WATI vs respond.io vs Interakt lists their plans and limits.

You pay twice: the provider's monthly plan, and Meta's charges per delivered message. Some providers add a markup on Meta's rate, so ask whether message fees are passed through at cost.

The rates come from Meta's pricing page, which changed on 1 October 2026: service replies used to be free and are now charged after the first 1,000 per number each month. Our full breakdown of WhatsApp Business API costs in Singapore works through typical monthly bills.

Option 3: a custom WhatsApp bot

A custom bot talks to the Cloud API directly, without a provider dashboard. A developer writes the logic, hosts it and connects it to your booking system, CRM or AI model. You still pay Meta per message, but there is no per-seat provider plan.

For most small businesses a provider is cheaper over the first two years. Custom makes sense when the bot must do something specific, such as check live stock in your own system before answering.

Rules every WhatsApp chatbot must follow

Meta's rules apply whichever option you choose, and breaking them is the usual reason numbers get restricted.

• Opt-in first. The WhatsApp Business Messaging Policy says you may only contact people who gave you their number and agreed to hear from your business. Meta's opt-in guide says the request must name your business and comply with local law.
• Templates outside 24 hours. Free-form replies are only allowed within 24 hours of the customer's last message. After that, the bot can only send pre-approved templates.
• A way to reach a human. The policy lets you automate replies but requires a clear escalation path, such as a hand-off to a staff member, a phone number or a support form.
• Marketing needs consent under Singapore law too. Promotional messages to Singapore numbers also fall under the PDPA's Do Not Call rules, so keep marketing opt-in separate from order updates.

How to choose and launch a WhatsApp bot

Work through these in order. Most of the effort is in steps 1 and 4, not the bot itself.

1. 1

   List the top 10 questions and messages

   Pull them from your current chats. If most are opening hours, prices and booking links, quick replies or a simple menu may be all you need.

2. 2

   Decide what must be automatic

   Order confirmations, booking reminders or payment links triggered by another system mean the Cloud API. Answering FAQs in office hours does not.

3. 3

   Pick the number carefully

   Meta lets providers onboard an existing Business app number so it works in the app and on the API together (coexistence docs). Ask your provider whether they support it; otherwise use a dedicated number.

4. 4

   Write the opt-in and hand-off

   Add opt-in wording to your website forms and checkout, and decide who picks up when the bot hands over and in what hours.

5. 5

   Submit templates and verify your business

   Templates need Meta's approval, and Meta's messaging limits start low for new accounts. Business verification raises them.

6. 6

   Test with staff, then watch quality

   Run it on staff phones for a week, then check Meta's quality rating and block rate after launch.

Do it yourself or get help?

Setting up greeting and away messages in the Business app is a DIY job. A provider trial is also manageable if you are comfortable with forms and templates.

If you want it done for you, our WhatsApp Notifications package (S$590) sets up an API number through an official provider, submits up to three templates and connects them to your store, form or booking system. For an AI assistant that answers from your own content, see AI Website Assistant (S$790), which can hand chats over to WhatsApp. Meta and provider fees are billed to you directly.